CN102693672A - Subway station fire hazard simulation experiment platform - Google Patents
Subway station fire hazard simulation experiment platform Download PDFInfo
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- CN102693672A CN102693672A CN2011100737404A CN201110073740A CN102693672A CN 102693672 A CN102693672 A CN 102693672A CN 2011100737404 A CN2011100737404 A CN 2011100737404A CN 201110073740 A CN201110073740 A CN 201110073740A CN 102693672 A CN102693672 A CN 102693672A
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Abstract
The invention relates to a subway station fire hazard simulation experiment platform, provides a subway station interior fire hazard simulation experiment platform and relates to subway fire hazard accident simulation equipment which is used to carry out experiment research on a generation and development mechanism of the subway station fire hazard accident, a control, prevention and treatment technology. The platform comprises a large-scale subway station entity model, a fire source system, a ventilation and smoke exhaust system, a fire hazard detection alarm system, a experiment measurement acquisition system and a data analysis system. The large-scale subway station entity model is made of a fireproof material and is a multi-layer building structure which comprises an interval tunnel, a platform, a station hall, an equipment room and the like. The whole entity model can be dismounted and combined. The fire source system can simulate different fire hazard scenes and generate approximately real hot smoke of the fire hazard. A problem of being difficult to develop a field experiment research on the urban mass transit subway fire hazard accident can be solved by the experiment system platform. Three-dimensional experiment simulation of subway fire hazard accident of different station structures, such as underground, deeply burying, an elevated type, an island style, a side type, a central nave and the like.
Description
Technical field
The present invention relates to a kind of to the subway station fire smoke spread with control experimentize research equipment, specifically be a kind of subway station fire simulation experiment platform.
Background technology
Be directed to disaster accident in the particular space and adopt the research that experimentizes of full-scale solid model; There is certain difficulty; It is a kind of necessity, science, economy and practicable means that the simulated experiment model of employing certain proportion chi conducts a research; Existing domestic and international most experimental system for simulating platform all is based on the yardstick analogue technique, the development and design in conjunction with specific demand.For example in buildings aspect the fire failure research; The flue gas that people such as Thomas adopt l/10 minification model to study in the volumed space building spreads phenomenon; Room Fire Smoke Control rule in the market of Morgan employing l/10 minification and the model investigation of Subway Station in Atrium large space has been carried out modeling effort to the fire smoke flow feature in the middle Room BUILDINGS MODELS of W.K.Chow in the l/7 engineer's scale.Aspect underground works; China Mining University has developed the three-dimensional underground works experimental system simulation box that loads of 2000 * 2030 * 2030mm, can carry out simulated experiment to underground workss such as subway engineering, tunnel and underground excavation engineering, foundation works, special underground construction method, slope project, soil-baffling structures; Beijing Jiaotong University has set up domestic unique double-deck underground works experiment tunnel, carries out the on-the-spot sound power test of engineering and the experimental study of monitoring; Beijing University of Technology adopts the small scale subway model of l:42 to carry out air current composition and heat transfer Study on Effect in the subway hole.Yet the applicable object of existing experimental system for simulating platform and suitable function are all comparatively single, only can satisfy the particular demands of certain type of engineering; Or model scale is too small, in experimental study, can bring bigger similarity error, can't satisfy the needs of disaster accident simulation testing further investigation.
At present domestic still do not have subway station empirical model platform and be used to simulate that the underground fire hazard flue gas spreads and experimental study such as control; Therefore; How to be directed to underground fire accidents; Setting up multi-functional large-scale experimental system platform, carry out the experimental simulation of subway space fire spread, poison gas diffusion etc. and the experimental study of emergency ventilation, is the problem that the urban track traffic field presses for solution.
[summary of the invention]
The object of the invention just is to provide a kind of underground fire hazard simulation experiment platform of the research that can experimentize to incidence and development mechanism, control and the Prevention Technique of subway station fire failure.
For realizing above-mentioned purpose; Technical scheme of the present invention is to adopt a kind of subway station fire simulation experiment platform of l:5 ratio; Comprise the subway station solid model and be located at burning things which may cause a fire disaster system, ventilation smoke exhaust system, fire detection alarm system, experiment measuring acquisition system and the data analysis system in this solid model; Wherein the subway station solid model is the 1:5 large scale model of simulation structure of the subway, is used for the three-dimensional restriceted envelope that simulated fire takes place; The burning things which may cause a fire disaster system is used to simulate different fire scenarios, produces to approach real fire heat smoke; The ventilation smoke exhaust system is used to simulate the ventilation smoke exhaust under subway normal mode and the disaster pattern; Fire detection alarm system is used to carry out the automatic identification and the warning of subway model interior fires; The experiment measuring acquisition system is used for DATA REASONING, collection and the processing of subway disaster accident simulation testing; Data analysis system be used to the to experimentize forecast assessment of contrast, analysis, checking and damage sequence of data,
Said subway station solid model is according to actual subway building structure, and the multi-layer construction structure that adopts the similarity theory analysis to set up can be dismantled and make up as required model;
Said burning things which may cause a fire disaster system comprises gas burner, hot cigarette generation case and burning things which may cause a fire disaster system controller, and its fire source power can be regulated with the amount of being fuming.
Wherein, Said subway station solid model includes station tunnel, platform, subway concourse, equipment room; Said subway concourse, platform, station tunnel all adopt modular design; Solid model integral body can be dismantled combination; Can simulate the structure of the subway of different stations form, comprise the buried subway station with four-layer structure, shallow embedding subway station or station layer with two-layer structure last, station hall layer under overhead subway station or station tunnel in formula subway station, the island of platform both sides or distributing side formula subway station or platform and the subway concourse of platform of station tunnel both sides ask formula subway station, the middle Room with open communal space.
Wherein, said subway station solid model main body adopts fire proofing material to make up, and is provided with the glass observation window at the inner different inspecting position of model.
Wherein, the gas burner of said burning things which may cause a fire disaster system and hot cigarette generation case adopt proportional control, and the burning things which may cause a fire disaster system can move.
Wherein, said burning things which may cause a fire disaster system contains flowmeter, thereby with the power of the gas flow pilot-gas burning things which may cause a fire disaster of control burner; The burning things which may cause a fire disaster flank of the burning jamb of said burner is placed with spike flue gas generation case, and the hot cigarette that is produced is nontoxic.
Wherein, Said ventilation smoke exhaust system comprises platform public area ventilation smoke exhaust subsystem, tread ventilation smoke exhaust subsystem, flange of rail ventilation smoke exhaust subsystem and running tunnel ventilation smoke exhaust subsystem; Each ventilation smoke exhaust subsystem is relatively independent; Can carry out air quantity respectively and regulate, the air quantity in its each air port is confirmed by the model similarity analysis.
Wherein, Each blower fan group by different numbers of said ventilation smoke exhaust subsystem constitutes; Adopt the wind flow cover that the air quantity of each blower fan is demarcated, and pass through the air quantity of automatic each blower fan of centralized control of speed change demodulator, the flow in each air port is conformed to the experiment setting.
Wherein, be furnished with shield door, building staircase and train model in the solid model of said subway station, so that platform space and running tunnel space are spaced from each other, the length of shield door is identical with platform length along edge of the platform setting for said shield door.
Wherein, Said experiment measuring acquisition system is the multichannel collecting system; Comprise measuring sonde and camera that multiple spot is arranged; The space temperature field, pressure field, velocity field, gas concentration, the visibility that are used for subway disaster accident simulation testing are carried out the multi-functional signal measurement of multiple spot, collection and processing in real time, and video acquisition and the processing of carrying out the active development process.
Subway station of the present invention fire simulation experiment platform has following outstanding advantage:
Structure of the subway subway concourse, platform, station tunnel that l, this experimental system platform can be simulated different stations form have all adopted modular design; Solid model integral body can be dismantled combination; Four-layer structure corresponding buried subway station; Two-layer structure corresponding the shallow embedding subway station, station layer last, station hall layer under structure corresponding overhead subway station, station tunnel in the structure correspondence of platform both sides formula subway station, island; The station tunnel both sides distributing the structure of platform corresponding side formula subway station, platform and subway concourse ask the structure with open communal space corresponding middle formula subway station, the Room.
2, large-scale multi-functional subway model
Based on the similarity theory analysis of the similarity criterion coefficient that is applicable to fire dynamics, flow of flue gas, confirmed the large scale subway real experiment model of l:5, this is the multi-functional subway model of the current track field of traffic maximum of carrying out fire accident analysis.Simultaneously, can carry out fire spread and Flue Gas Diffusion experimental study, ventilation smoke exhaust research, toxic and harmful diffusion research etc. in this model inside.
3, the burning things which may cause a fire disaster system of simulation different capacity fire heat smoke
This is one of core of whole experiment table, and the gas burner of employing can reach the effect of control combustion power through the adjustments of gas flow, to produce different fire flash-up curves; The setting of power confirms that based on the similarity theory analysis of different fire scenarios low profile thermal cigarette generation case is positioned over the flank of combusting device stove burner, produces to show comprehensive flue gas particle; Mix and entrainment through injecting fire plume, produce observable fire heat smoke, the hot flue gas body toxicity that this system produces is little, simulation truly; The device conveniently moving; Fire source power is prone to regulate, control, and of paramount importance is that the experimental repeatability of burning things which may cause a fire disaster system is good, cost is low.
4, the ventilation smoke exhaust system is controlled automatically
Each ventilation smoke exhaust system is relatively independent, can carry out air quantity respectively and regulate.Each system is made up of the blower fan group of different numbers; Adopt the wind flow cover that the air quantity of each blower fan is demarcated; To guarantee the accurate of air quantity,, make the flow in each air port conform to the experiment setting again through each fan delivery of the automatic centralized control of speed change demodulator; The automatic controlled and accuracy of system provides great facility for the simulation of the inner emergency ventilation of subway, and that has improved system can be handling.
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Description of drawings
Figure l is the platform planimetric map of the subway model with double-layer structure of experimental system for simulating platform of the present invention;
Fig. 2 is the subway concourse planimetric map of the subway model with double-layer structure of experimental system for simulating platform of the present invention;
Fig. 3 is the sectional view in A-A cross section of Fig. 2;
Fig. 4 is a burning things which may cause a fire disaster systematic schematic diagram of the present invention;
Fig. 5 is the arrangenent diagram of experiment measuring of the present invention system.
.1, tunnel among the figure; 2, platform; : 3, tread ventilation smoke exhaust system; 4, flange of rail ventilation smoke exhaust system melon tunnel ventilation smoke evacuation system .6, shield door; 7, structural support posts .8,9, staircase; 10, equipment room; 11, subway concourse; 12, gateway; 13, interlayer; 14, platform public area ventilation smoke exhaust system; 15, burning things which may cause a fire disaster system controller; 16, burner source of the gas line; 17, hot cigarette generation case; 18, combusting device stove burner; 19,20, temperature measurement probe in 2l, the tunnel; 22,23,24,25,26, speed, temperature, pressure, gas componant measuring sonde in the platform; 27,28,29, speed, temperature, pressure, gas componant measuring sonde in the subway concourse; 30, video acquisition camera in 3l, the tunnel; 32,33, video acquisition camera in the platform; 34, video acquisition camera in the subway concourse; 35,36, model external video acquisition camera.
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Embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Experimental system for simulating platform of the present invention mainly comprises subway station solid model, burning things which may cause a fire disaster system, ventilation smoke exhaust system, fire detection alarm system, experiment measuring acquisition system and data analysis system.Below, in conjunction with accompanying drawing, the specific embodiment of experimental system for simulating of the present invention is carried out further detailed description.
(a), subway station solid model
Figure l to 3 only provides the synoptic diagram of two layers of the most frequently used island formula structure of the subway; Bright basic structure and the distribution that shows station hall layer, station layer, building staircase, equipment room, smoke evacuation/air port, gateway, the subway station of other different architecture structure forms promptly can further be realized on this basis.
As scheme shown in the l to 3; The subway station solid model is the three-dimensional restriceted envelope that the simulated fire accident takes place; Be that a long * wide * height is the two-layer structure of 20m * 4m * 2.2m (similar proportion l:5); The agent structure bottom represent underground two layers station layer (long * wide * as highly to be 16m * 2m * lm), top represent B1 station hall layer (long * wide * the high 17m * 3.6m of being * lm).Station hall layer is connected with the external world (one is provided with the building staircase on straight-through ground, and owing to little to the Research Significance of this experiment porch, so the details that the gateway is in communication with the outside is omitted in platform) through 4 gateways 12, gateway 12 size 1.5m * 0.8m; Be connected through two groups of (totally four) staircases between station hall layer and the station layer, this that is to say unique gateway that station layer links to each other with the external world, and the headroom at its single staircase open communication position is of a size of 0.6m * 0.4m.In the both sides of an island platform is respectively that two sections station tunnel l are (long * wide * high for 20m * lm * 1.1m), the ground location of tunnel l is lower than the ground location 0.2m of platform 2; This experimental system platform adopts has the closed system design proposal of shield door, and the station is provided with shield door 6 along platform edge, makes platform space and district ask that tunnel space is spaced from each other, and the length of shield door 6 is identical with the length of platform 2, and shield door 6 height overalls are 0.6m; Equipment room 10 lays respectively at the both sides in platform zone, is of a size of 1.6m * 1.2m * 0.6m.Station layer and station hall layer can be considered closed structure except above-mentioned specific gateway; Opening is left at the two ends of running tunnel, and open height and width can be regulated by the radical occlusion device that is provided with automatically, so as to make in the experiment boundary condition as much as possible with met in practice.Build train model with the multiple layer refractory plate, train is of a size of 14.4m * 0.6m * 0.6m, can be placed on as required in the tunnel l, and also extensible tunnel l is used to simulate the situation that there are car, no car in subway inside.
Subway station solid model main body is made up of building materialss such as refractory brick, refractory slab, fireproof glass and steel members, and wherein the model ground adopts the refractory brick place mat; The shield door 6 in platform zone adopts fireproof glass and steel member to constitute; Platform 2 adopts refractory slab with subway concourse 11 middle interlayers 13 (thickness is 20c:m); The building enclosure of running tunnel adopts refractory brick; Equipment room 10 adopts refractory slab to be split to form; Some building enclosures of platform, subway concourse adopt multilayer thickening refractory slab.
(b), ventilation smoke exhaust system
Ventilation smoke exhaust of the present invention system comprises platform public area ventilation smoke exhaust system 14, tread ventilation smoke exhaust system 3, flange of rail ventilation smoke exhaust system 4 and station tunnel ventilation smoke exhaust system 5; Doing under the normal condition ventilates uses; Doing smoke evacuation under the accident conditions uses; Each ventilation smoke exhaust system is relatively independent, can carry out air quantity respectively and regulate.System always has 50 little blower fan (maximum quantity of wind lOOm./ h), 4 big blower fan (maximum quantity of wind 1000m./ h) constitute.In the station tunnel of train orderly shutdown scope, every side is provided with 15 tread smoke evacuation/air ports, 15 flanges of rail (under platform) smoke evacuation/air port, and the smoke evacuation air port is of a size of 0.3m * 0.4m, and concrete the layout seen figure l for details; The two ends, station are provided with tunnel ventilation system 5, and every end disposes 2 of subsequent use mutually tunnel blower fans, and the air port is of a size of 0.8m * 0.9m, and concrete the layout seen figure l for details; Both sides, station platform public domain respectively are provided with 10 smoke evacuation/air ports, and smoke evacuation/air port is of a size of 0.3m * 0.2m, and concrete the layout seen Fig. 3 for details.
For homogeneity and the controllability that ensures each air port flow, each system's distributed arrangement blower fan, and control automatically through the speed change demodulator.Adopt the wind flow cover that fan delivery is demarcated.In the experiment, the total blast volume of each system fan is confirmed according to original design of subway and model similarity theoretical analysis.Simultaneously, can carry out the experiment under the different air quantity, thereby instruct the design of anti-smoke evacuation prioritization scheme.
(c), burning things which may cause a fire disaster system
As shown in Figure 4, burning things which may cause a fire disaster of the present invention system is made up of gas burner and hot cigarette generation case 17.Gas burner is realized the accurate control of gas flow through burning things which may cause a fire disaster system controller 15; Thereby control fire source power; Produce and satisfy the desired certain power distribution of experiment; Can simulate the fire source power growth curve of the specific fire scenario of subway comparatively truly, maximum stable power can reach 500KW, and the concrete flash-up curve that is adopted in the experiment can be confirmed according to original design of subway and the analysis of model similar proportion.The sparking mode of gas burner is that electronics is lighted a fire automatically, and the clean gas of burnings such as rock gas, liquefied petroleum gas (LPG) is mainly adopted in combustion gas.Combusting device stove burner 18 conveniently movings of burner can be placed arbitrarily as required.Because rock gas, the liquefied petroleum gas (LPG) amount of being fuming when burning is very little,, need to add the spike flue gas particle in order to follow the tracks of the motion conditions of flue gas; Hot cigarette generation case 17 promptly is based on this purpose and is used with combusting device stove burner 18, and it is of a size of 0.2m * 0.2m * 0.15m with reference to Australia hot cigarette testing standard Asl39l design; Cake is placed in hot cigarette generation case bottom, and its burning-point is very low, and it is respond well to be fuming; With built-in electric rangette it is lighted in the experiment, cake glows and sends a large amount of white cigarettes, and the flue gas gathering diffuses to flank; Spurt facing to the fire plume district of burning jamb through the flank spout, thereby plume entrainments flue gas and realizes the spike effect of flue gas with the flue gas particle motion, thereby; Under the heating of burning things which may cause a fire disaster, adopt this mode promptly to form the hot flue gas of certain power, this flue gas approaches the hot flue gas of natural fire.But the actual fire comburant of burning things which may cause a fire disaster system real simulation that the present invention proposes, its advantage is: but this fire source power electronic control control, the flash-up curve can repeat; The hot flue gas body toxicity that produces is little, simulation is true; The experimental repeatability of burning things which may cause a fire disaster system is good, cost is low; The system and device conveniently moving can be placed on the fire failure that the inner diverse location of subway model is simulated different scenes according to the experiment needs.
(d), fire detection alarm system
Fire detection alarm system of the present invention is used to carry out the detection identification and warning of subway model interior fires; Comprise detector and alarm controller two parts; At station hall layer 4 smoke detectors are set, 4 smoke detectors are set, when the fire smoke concentration of simulation reaches the setting value of cutting off from station layer; The response voltage that produces just drives alarm, and then links with smoke control system.In experiment, can be artificial as required close in good time or start automatic fire alarm system.
(e), experiment measuring acquisition system and data analysis system
Experiment measuring acquisition system of the present invention is with the multiple spot in the subway disaster accident simulation testing, multi-faceted, multiparameter, multi-functional signal measurement, collection and processing experimental data; The flue-gas temperature that the main measurement of experiment tunnel, platform, subway concourse and escape stair are asked, flow velocity, pressure, gas componant etc.; Confirm the situation that spreads of flue gas in addition through range estimation, shooting, smoke-sensitive alarm, Fig. 5 is the arrangenent diagram of experiment measuring system.
As shown in Figure 5, speed, temperature, pressure, gas componant measuring sonde 22,23,24,25,26 are set in platform 2; Speed, temperature, pressure, gas componant measuring sonde 27,28,29 are set in subway concourse l.
Temperature sensor adopts K type armoured thermocouple, and temp probe also is arranged in the tunnel, like temperature measurement probe 17,18,19 except that platform (comprising building staircase opening part) 2, subway concourse l.
Hot-bulb anemoscope and bidirectional pressure difference pitot tube are adopted in velocity survey, and speed is popped one's head in except that platform (comprising building staircase opening part) 2, subway concourse l, also is located in the tunnel.
The measurement of space pressure is carried out through micro-pressure sensor, and the pressure in the different spaces is carried out real-time measurement.
C0 in gas concentration such as the fire hazard environment, c0,, 0, etc. gas componant, and toxic gas leakage concentration, through flue gas analyzer and infrared gas analyzer measurement.
Image in the experimentation carries out real-time continuous through distributed image capturing system and catches dynamic image, carries out the image scene seizure by the CCD camera system that multiple spot is arranged, carries out the rear end by the multi-faceted switching HD digital of frequency division display and shows.Camera comprises video acquisition camera 30,3l in the tunnel, video acquisition camera 32,33 in the video acquisition camera 32,33 in the platform, subway concourse, model external video acquisition camera 35,36.Can adjust the particular location of camera according to actual needs flexibly.
Because need the signal type of measurement many in the experiment, therefore the multi-faceted layout of sensor multiple spot needs the multichannel collecting system to carry out signals collecting, acquisition system adopts the multichannel collecting instrument NI SCXI--1102 of National Instruments.
Data analysis system of the present invention is used for the experimental data that obtains is analyzed, and obtains the experimental data of fire failure, and adopts softwares such as FDS, FLUENT to carry out the fluid dynamic three-dimensional numerical value simulation of fire, in conjunction with experimental data
Analyze, the fire failure consequence is carried out suitable forecast assessment, propose targetedly disaster and place measure, for preventing and reducing natural disasters of the engineering design of subway construction, metro operation provides rationally, scientific basis accurately.
The use of brief description subway station of the present invention fire simulation experiment system platform: (1) is positioned over the position that fire disaster simulation need be carried out in subway model inside with the combusting device stove burner of burning things which may cause a fire disaster system 18 and hot cigarette generation case 17 (in cake is arranged), for example in platform 2, subway concourse 11, train or the tunnel l; (2) according to the design and the similarity theory analysis of fire scenario, contrived experiment fire source power growth curve is to adjust in experiment; (3) same, according to original design of subway and similarity theory analysis, ventilation smoke exhaust system in the experiment is carried out air quantity regulate; (4), the unfolding mode (side is opened, open both sides, contract fully) of screen door 6 is set according to pattern; (5) as required, arrange or remove train model; (6) as required, start or close automatic fire alarm system; (7) open the experiment measuring acquisition system, verification is demarcated; (8) experiment beginning starts the electric ignition of burning things which may cause a fire disaster, and smoke evacuation system gets into disaster pattern, data acquisition; (9) experiment finishes, and finishes to gather, and closes burner, opens the experimental situation smoke evacuation, handles, analyzes experimental data.
More than be preferred forms of the present invention, according to content disclosed by the invention, those of ordinary skill in the art can obviously expect some identical, replacement schemes, the scope that these are identical, replacement scheme all should fall into the present invention's protection.
Claims (9)
1. subway station fire simulation experiment platform; Comprise the subway station solid model and be located at burning things which may cause a fire disaster system, ventilation smoke exhaust system, fire detection alarm system, experiment measuring acquisition system and the data analysis system in this solid model; Wherein the subway station solid model is the l:5 large scale model of simulation structure of the subway, is used for the three-dimensional restriceted envelope that simulated fire takes place; The burning things which may cause a fire disaster system is used to simulate different fire scenarios, produces to approach real fire heat smoke; The ventilation smoke exhaust system is used to simulate the ventilation smoke exhaust under subway normal mode and the disaster pattern; Fire detection alarm system is used to carry out the automatic identification and the warning of subway model interior fires; The experiment measuring acquisition system is used for DATA REASONING, collection and the processing of underground fire hazard experiment; Data analysis system be used to the to experimentize forecast assessment of contrast, analysis, checking and damage sequence of data,
It is characterized in that said subway station solid model is according to actual subway building structure, the multi-layer construction structure that adopts the similarity theory analysis to set up can be dismantled and make up as required subway experimental entity model;
Said burning things which may cause a fire disaster system comprises gas burner, hot cigarette generation case and burning things which may cause a fire disaster system controller, and its fire source power can be regulated with the amount of being fuming.
2. like the described subway station of claim l fire simulation experiment platform; It is characterized in that; Said subway station solid model includes station tunnel, platform, subway concourse, equipment room; Said subway concourse, platform, station tunnel all adopt modular design; Solid model integral body can be dismantled combination; Can simulate the structure of the subway of different stations form, comprise the buried subway station with four-layer structure, shallow embedding subway station or station layer with two-layer structure last, station hall layer under overhead subway station or station tunnel in formula subway station, the island of platform both sides or distributing side formula subway station or platform and the subway concourse of platform of station tunnel both sides ask formula subway station, the middle Room with open communal space.
3. like claim l or 2 described subway station fire simulation experiment platforms, it is characterized in that said subway station solid model main body adopts fire proofing material to make up, and be provided with the glass observation window at the inner different inspecting position of model.
4. like the described subway station of claim l fire simulation experiment platform, it is characterized in that the gas burner of said burning things which may cause a fire disaster system and hot cigarette generation case adopt proportional control, and the burning things which may cause a fire disaster system can move.
5. like claim l, 2 or 4 described subway station fire simulation experiment platforms, it is characterized in that said burning things which may cause a fire disaster system contains flowmeter, thereby with the power of the gas flow pilot-gas burning things which may cause a fire disaster of control burner; The burning things which may cause a fire disaster flank of the burning jamb of said burner is placed with spike flue gas generation case, and the hot cigarette that is produced is nontoxic.
6. like claim l, 2 or 4 described subway station fire simulation experiment platforms; It is characterized in that; Said ventilation smoke exhaust system comprises platform public area ventilation smoke exhaust subsystem, tread ventilation smoke exhaust subsystem, flange of rail ventilation smoke exhaust subsystem and running tunnel ventilation smoke exhaust subsystem; Each ventilation smoke exhaust subsystem is relatively independent, can carry out air quantity respectively and regulate, and the air quantity in its each air port is confirmed by the model similarity analysis.
7. subway station as claimed in claim 6 fire simulation experiment platform; It is characterized in that; Each blower fan group by different numbers of said ventilation smoke exhaust subsystem constitutes; Adopt the wind flow cover that the air quantity of each blower fan is demarcated, and pass through the air quantity of automatic each blower fan of centralized control of speed change demodulator, the flow in each air port is conformed to the experiment setting.
8. like the described subway station of claim l fire simulation experiment platform; It is characterized in that; Be furnished with shield door, building staircase and train model in the solid model of said subway station; So that platform space and running tunnel space are spaced from each other, the length of shield door is identical with platform length along edge of the platform setting for said shield door.
9. like the described subway station of claim l fire simulation experiment platform; It is characterized in that; Said experiment measuring acquisition system is the multichannel collecting system; Comprise measuring sonde and camera that multiple spot is arranged, be used for asking that to the sky of subway station fire simulation experiment temperature field, pressure field, velocity field, gas concentration, visibility carry out the multi-functional signal measurement of multiple spot, collection and handle in real time, and video acquisition and the processing of carrying out the active development process.
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Application publication date: 20120926 |